Yes, this happens to me all the time. It could be a body language not being very assertive, other people in the group are more dominant and assertive, they are higher up in the pecking order and people pay attention to them or try to get their attention so the group listens to what they are saying and not what I have to say. People are impatient, don't let me finish, talk over the top of me or just ignore me. They may not be doing it on purpose but yes, it is very rude. I also seem to be slower to respond than other people, in a group conversation, someone else always manages to reply before I can, so I never get to say what I want to say. I think I may have an auditory processing delay or something, because I can't seem to process as fast as other rpeople - it may be only a second, but it's enough to hamper communication in this kind of situation. I get extremely frustrated. I give in and stop listening, tune out and get bored in group conversations. That's why things like parties where people just sit round talking are so boring and pointless for me. I'm better at one to one conversations, because at least they will wait for me to finish my sentence. Also, I think that people find me boring and don't want to talk to me, because I can't do this banter that most groups engage in, there's too much pressure to be fun and jolly all the time.
i just had the same experience on the forum here i posted an answer and everyone elses comment was liked apart from mine iam the outcast of forums
Yes, this happens to me on forums, too. I get ignored quite a lot. It's not necessarily the case that my comments aren't liked, it's that other members of the forum speak to each other privately and form unions/bonds/connections/friendships/groups/cliques where I don't, and then I feel that I don't connect, and there are things going on that I'm not a part of. The same thing happens on forums as happens in real life, even on autism forums. I was absent from this forum for a while, and came back after a year or so. I noticed that at the same time that I came back, another member who I remember was around at the time that I was, also came back after a period of absence. He said that he had received messages asking him where he had been, where are you, etc, but I, even though I have nearly 1500 posts, never got any such messages, I don't think that anyone even noticed that I was gone.
So, quite simply, I'm not on people's social radar.